Listen to Concerto for Guitar and Strings "Megaron": II. Allegro assai online. Concerto for Guitar and Strings "Megaron": II. Allegro assai is an Instrumental language song and is sung by Artyom Dervoed, Rustem Abyazov and Kazan Chamber Orchestra La Primavera. Concerto for Guitar and Strings "Megaron": II. Allegro assai, from the album Koshkin: Concerto for Guitar and Strings "Megaron" (Live), was released in the year 2019. The duration of the song is 6:25. Download Instrumental songs online from JioSaavn.